8L Pneumatic ATF Fill and Extract Pump with Oil Funnel Set

Owners of a Mercedes with the 7G-Tronic 722.9, a BMW or Ram with a ZF eight-speed, or most late-model European and Asian cars find the same thing when they go to change transmission fluid: there is no dipstick and no tube to pour into. Fluid goes in through a threaded port on the pan or case, and the level is set when it runs back out at a specified temperature. This 8 liter pneumatic pump does both halves of that service on shop air. It pulls old fluid out, then pressurizes the same tank to push new fluid into the fill port, and it comes with a 20-cap engine oil funnel set for the oil change that usually happens on the same visit.

What this pump does in a fluid service

The tank works two ways from one air line. In extract mode, compressed air flowing through a venturi pulls a vacuum in the tank and draws fluid in through a hose, either down a dipstick tube or out of a pan. Move the control plug and the air pressurizes the tank instead, pushing fluid out through the main hose. An on/off control at the hose handle lets you start and stop flow at the fill port without reaching back to the tank, and quick-connect fittings let the ATF adapters snap on and off. The tank is translucent, so you can read how much you pulled out and how much you put back, which is the easiest way to confirm a drain-and-fill did not leave the unit low. Eight liters covers a pan drain on most passenger car and light truck transmissions in one tank.

Why sealed units need a pressure fill

• The fill port is on the pan or case side, above the bottle, so fluid must be pushed uphill.
• The level is set at the overflow at a specific temperature with the engine running. Mercedes service information for the 722.9 checks the red-label fluid at 45 C, using an M12 x 1.5 fill adapter.
• Fluid type matters. Mercedes split the 722.9 fluid at a June 2010 production date, red 236.14 before and blue 236.15 after, and says the two must not be mixed.
• Overfilling is as bad as underfilling; extra fluid gets churned, foams and can vent out the breather.

How to know it fits the job

Before you drain anything, look up your fill port and its thread, confirm the correct fluid, and decide whether a single drain-and-fill or several in a row is right for your mileage. Our 722.9 flush vs drain and fill and ZF 8HP flush vs drain and fill guides cover the two units this tool is most often bought for, and how to do a transmission drain and fill gives the general steps for any sealed unit.

Fitment and coverage

This is a universal tool, not a part for one vehicle. The supplied ATF adapters thread into common fill ports, and the pump can also pull fluid through a dipstick tube and handle coolant, gear oil and brake fluid reservoirs. Fill threads vary between makers and sometimes between model years, so match an adapter to your port first. For a Mercedes, the 722.9 fill adapter kit or the 722.9 filter kit with fill adapter pairs with this pump, and the 27-piece fill adapter kit covers a wider range. The 20 oil funnel caps thread onto common engine oil filler necks from makers such as VW, GM, BMW, Audi, Mazda and Ford and seal with a rubber gasket, so oil goes in fast without backing up around the neck.

Use and care notes

• Rinse the tank and hose with a little of the new fluid before a job. A tank that last held red 722.9 fluid will contaminate a blue-fluid unit.
• Draw new fluid into the tank from the bottles in extract mode rather than pouring it in, which keeps dirt out.
• Set the final level with the engine running at the temperature the service procedure calls for, then reinstall the fill or overflow plug with a new seal ring.
• Release tank pressure before you change adapters or open the tank.
• Use the correct fluid, for example ZF LifeguardFluid 8 for an 8HP service.

Does it need an air compressor?

Yes. It runs on shop air for both extracting and dispensing. Without a compressor, a hand-pumped or drill-driven fill pump is the better choice.

Can I use it on a Mercedes 722.9?

Yes, as long as you have an adapter for the M12 x 1.5 fill port and the correct fluid for your build date. Set the level at the overflow at the specified temperature with the engine running.

Can it pull fluid out through the dipstick tube?

Yes. In extract mode it draws fluid through a hose fed down the dipstick tube or into the pan, as well as from coolant, gear oil and brake fluid reservoirs.

How much fluid does the tank hold?

The tank is 8 liters, about 2.1 gallons, and it is translucent so you can read the level while you extract or fill.

What are the oil funnel caps for?

The 20 caps thread onto common engine oil filler necks and seal with a rubber gasket, so you can pour oil quickly without it spilling around the filler opening during an oil change.

What if none of the adapters fit my fill port?

Fill threads vary by maker. A dedicated adapter kit for your transmission attaches to the same hose; send us your year and model and we will point you to the right one.

• 722.9 Flush vs Drain and Fill
• ZF 8HP Flush vs Drain and Fill
• How to Do a Transmission Drain and Fill
• ZF 6HP BMW 3 Series Fluid Change